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// Copyright 2012 Aaron Jacobs. All Rights Reserved.
// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package testing
import (
"encoding/gob"
"fmt"
"go/build"
"os"
"path"
)
// EncryptTestCase represents a test case for Encrypt() generated using a
// reference implementation.
type EncryptTestCase struct {
Key []byte
Plaintext []byte
Associated [][]byte
Output []byte
}
func (c EncryptTestCase) String() string {
return fmt.Sprintf(
"Encrypt(%x, %x, %v) = %x",
c.Key,
c.Plaintext,
c.Associated,
c.Output)
}
// EncryptCases returns test cases for Encrypt.
func EncryptCases() []EncryptTestCase {
// Find the source package.
pkg, err := build.Import(
"github.com/jacobsa/crypto/testing/cases",
"",
build.FindOnly)
if err != nil {
panic(fmt.Sprintf("Finding package: %v", err))
}
// Load the appropriate gob file.
gobPath := path.Join(pkg.Dir, "encrypt.gob")
f, err := os.Open(gobPath)
if err != nil {
panic(fmt.Sprintf("Opening %s: %v", gobPath, err))
}
defer f.Close()
// Parse it.
var cases []EncryptTestCase
if err = gob.NewDecoder(f).Decode(&cases); err != nil {
panic(fmt.Sprintf("Decoding: %v", err))
}
// Make sure the plaintext field is non-nil for all cases so that it can
// easily be used with a DeepEquals matcher. Gob decoding does not seem to
// preserve this.
for i, _ := range cases {
c := &cases[i]
if c.Plaintext == nil {
c.Plaintext = []byte{}
}
}
return cases
}
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